Why is it believed that all the directory submissions should be done manually? There are so many auto-submission programs around – and manual submission will take a lot of time, won it?
Directory submission – as with everything in SEO – is only good when done artistically. It means varying titles and descriptions; it means choosing the most relevant category for your site in all cases. The last task is not as easy as it may seem: all directories have different category structures. It is good style to read the site-specific guidelines before you start submitting your site. Like everything else, guidelines differ slightly from directory to directory; your auto-submitter is, obviously, incapable of reading them. Many directory owners attach a “test for humanity” to their submission forms: you will have to enter certain characters, shown to you as graphics, manually. That’s done in order to stop auto-submitters, as such practice is commonly recognised as spam.